21010110211112 has 24 divisors (see below), whose sum is σ = 43300795323450. Its totient is φ = 9550050095520.

The previous prime is 21010110211109. The next prime is 21010110211127. The reversal of 21010110211112 is 21111201101012.

It can be written as a sum of positive squares in only one way, i.e., 18484788767236 + 2525321443876 = 4299394^2 + 1589126^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10852328687 + ... + 10852330622.

Almost surely, 2^{21010110211112} is an apocalyptic number.

21010110211112 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21010110211112 is an abundant number, since it is smaller than the sum of its proper divisors (22290685112338).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21010110211112 is a wasteful number, since it uses less digits than its factorization.

21010110211112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21704659337 (or 21704659322 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 21010110211112 its reverse (21111201101012), we get a palindrome (42121311312124).

The spelling of 21010110211112 in words is "twenty-one trillion, ten billion, one hundred ten million, two hundred eleven thousand, one hundred twelve".